1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
5 * Derived from Intel e1000 driver
6 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
11 char atl1e_driver_name[] = "ATL1E";
12 #define PCI_DEVICE_ID_ATTANSIC_L1E 0x1026
14 * atl1e_pci_tbl - PCI Device ID Table
16 * Wildcard entries (PCI_ANY_ID) should come last
17 * Last entry must be all 0s
19 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
20 * Class, Class Mask, private data (not used) }
22 static const struct pci_device_id atl1e_pci_tbl[] = {
23 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1E)},
24 {PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, 0x1066)},
25 /* required last entry */
28 MODULE_DEVICE_TABLE(pci, atl1e_pci_tbl);
30 MODULE_AUTHOR("Atheros Corporation, <xiong.huang@atheros.com>, Jie Yang <jie.yang@atheros.com>");
31 MODULE_DESCRIPTION("Atheros 1000M Ethernet Network Driver");
32 MODULE_LICENSE("GPL");
34 static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter);
37 atl1e_rx_page_vld_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] =
39 {REG_HOST_RXF0_PAGE0_VLD, REG_HOST_RXF0_PAGE1_VLD},
40 {REG_HOST_RXF1_PAGE0_VLD, REG_HOST_RXF1_PAGE1_VLD},
41 {REG_HOST_RXF2_PAGE0_VLD, REG_HOST_RXF2_PAGE1_VLD},
42 {REG_HOST_RXF3_PAGE0_VLD, REG_HOST_RXF3_PAGE1_VLD}
45 static const u16 atl1e_rx_page_hi_addr_regs[AT_MAX_RECEIVE_QUEUE] =
47 REG_RXF0_BASE_ADDR_HI,
48 REG_RXF1_BASE_ADDR_HI,
49 REG_RXF2_BASE_ADDR_HI,
54 atl1e_rx_page_lo_addr_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] =
56 {REG_HOST_RXF0_PAGE0_LO, REG_HOST_RXF0_PAGE1_LO},
57 {REG_HOST_RXF1_PAGE0_LO, REG_HOST_RXF1_PAGE1_LO},
58 {REG_HOST_RXF2_PAGE0_LO, REG_HOST_RXF2_PAGE1_LO},
59 {REG_HOST_RXF3_PAGE0_LO, REG_HOST_RXF3_PAGE1_LO}
63 atl1e_rx_page_write_offset_regs[AT_MAX_RECEIVE_QUEUE][AT_PAGE_NUM_PER_QUEUE] =
65 {REG_HOST_RXF0_MB0_LO, REG_HOST_RXF0_MB1_LO},
66 {REG_HOST_RXF1_MB0_LO, REG_HOST_RXF1_MB1_LO},
67 {REG_HOST_RXF2_MB0_LO, REG_HOST_RXF2_MB1_LO},
68 {REG_HOST_RXF3_MB0_LO, REG_HOST_RXF3_MB1_LO}
71 static const u16 atl1e_pay_load_size[] = {
72 128, 256, 512, 1024, 2048, 4096,
76 * atl1e_irq_enable - Enable default interrupt generation settings
77 * @adapter: board private structure
79 static inline void atl1e_irq_enable(struct atl1e_adapter *adapter)
81 if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
82 AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
83 AT_WRITE_REG(&adapter->hw, REG_IMR, IMR_NORMAL_MASK);
84 AT_WRITE_FLUSH(&adapter->hw);
89 * atl1e_irq_disable - Mask off interrupt generation on the NIC
90 * @adapter: board private structure
92 static inline void atl1e_irq_disable(struct atl1e_adapter *adapter)
94 atomic_inc(&adapter->irq_sem);
95 AT_WRITE_REG(&adapter->hw, REG_IMR, 0);
96 AT_WRITE_FLUSH(&adapter->hw);
97 synchronize_irq(adapter->pdev->irq);
101 * atl1e_irq_reset - reset interrupt confiure on the NIC
102 * @adapter: board private structure
104 static inline void atl1e_irq_reset(struct atl1e_adapter *adapter)
106 atomic_set(&adapter->irq_sem, 0);
107 AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
108 AT_WRITE_REG(&adapter->hw, REG_IMR, 0);
109 AT_WRITE_FLUSH(&adapter->hw);
113 * atl1e_phy_config - Timer Call-back
114 * @t: timer list containing pointer to netdev cast into an unsigned long
116 static void atl1e_phy_config(struct timer_list *t)
118 struct atl1e_adapter *adapter = from_timer(adapter, t,
120 struct atl1e_hw *hw = &adapter->hw;
123 spin_lock_irqsave(&adapter->mdio_lock, flags);
124 atl1e_restart_autoneg(hw);
125 spin_unlock_irqrestore(&adapter->mdio_lock, flags);
128 void atl1e_reinit_locked(struct atl1e_adapter *adapter)
130 while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
134 clear_bit(__AT_RESETTING, &adapter->flags);
137 static void atl1e_reset_task(struct work_struct *work)
139 struct atl1e_adapter *adapter;
140 adapter = container_of(work, struct atl1e_adapter, reset_task);
142 atl1e_reinit_locked(adapter);
145 static int atl1e_check_link(struct atl1e_adapter *adapter)
147 struct atl1e_hw *hw = &adapter->hw;
148 struct net_device *netdev = adapter->netdev;
150 u16 speed, duplex, phy_data;
152 /* MII_BMSR must read twice */
153 atl1e_read_phy_reg(hw, MII_BMSR, &phy_data);
154 atl1e_read_phy_reg(hw, MII_BMSR, &phy_data);
155 if ((phy_data & BMSR_LSTATUS) == 0) {
157 if (netif_carrier_ok(netdev)) { /* old link state: Up */
160 value = AT_READ_REG(hw, REG_MAC_CTRL);
161 value &= ~MAC_CTRL_RX_EN;
162 AT_WRITE_REG(hw, REG_MAC_CTRL, value);
163 adapter->link_speed = SPEED_0;
164 netif_carrier_off(netdev);
165 netif_stop_queue(netdev);
169 err = atl1e_get_speed_and_duplex(hw, &speed, &duplex);
173 /* link result is our setting */
174 if (adapter->link_speed != speed ||
175 adapter->link_duplex != duplex) {
176 adapter->link_speed = speed;
177 adapter->link_duplex = duplex;
178 atl1e_setup_mac_ctrl(adapter);
180 "NIC Link is Up <%d Mbps %s Duplex>\n",
182 adapter->link_duplex == FULL_DUPLEX ?
186 if (!netif_carrier_ok(netdev)) {
187 /* Link down -> Up */
188 netif_carrier_on(netdev);
189 netif_wake_queue(netdev);
196 * atl1e_link_chg_task - deal with link change event Out of interrupt context
197 * @work: work struct with driver info
199 static void atl1e_link_chg_task(struct work_struct *work)
201 struct atl1e_adapter *adapter;
204 adapter = container_of(work, struct atl1e_adapter, link_chg_task);
205 spin_lock_irqsave(&adapter->mdio_lock, flags);
206 atl1e_check_link(adapter);
207 spin_unlock_irqrestore(&adapter->mdio_lock, flags);
210 static void atl1e_link_chg_event(struct atl1e_adapter *adapter)
212 struct net_device *netdev = adapter->netdev;
216 spin_lock(&adapter->mdio_lock);
217 atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
218 atl1e_read_phy_reg(&adapter->hw, MII_BMSR, &phy_data);
219 spin_unlock(&adapter->mdio_lock);
220 link_up = phy_data & BMSR_LSTATUS;
221 /* notify upper layer link down ASAP */
223 if (netif_carrier_ok(netdev)) {
224 /* old link state: Up */
225 netdev_info(netdev, "NIC Link is Down\n");
226 adapter->link_speed = SPEED_0;
227 netif_stop_queue(netdev);
230 schedule_work(&adapter->link_chg_task);
233 static void atl1e_del_timer(struct atl1e_adapter *adapter)
235 del_timer_sync(&adapter->phy_config_timer);
238 static void atl1e_cancel_work(struct atl1e_adapter *adapter)
240 cancel_work_sync(&adapter->reset_task);
241 cancel_work_sync(&adapter->link_chg_task);
245 * atl1e_tx_timeout - Respond to a Tx Hang
246 * @netdev: network interface device structure
247 * @txqueue: the index of the hanging queue
249 static void atl1e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
251 struct atl1e_adapter *adapter = netdev_priv(netdev);
253 /* Do the reset outside of interrupt context */
254 schedule_work(&adapter->reset_task);
258 * atl1e_set_multi - Multicast and Promiscuous mode set
259 * @netdev: network interface device structure
261 * The set_multi entry point is called whenever the multicast address
262 * list or the network interface flags are updated. This routine is
263 * responsible for configuring the hardware for proper multicast,
264 * promiscuous mode, and all-multi behavior.
266 static void atl1e_set_multi(struct net_device *netdev)
268 struct atl1e_adapter *adapter = netdev_priv(netdev);
269 struct atl1e_hw *hw = &adapter->hw;
270 struct netdev_hw_addr *ha;
271 u32 mac_ctrl_data = 0;
274 /* Check for Promiscuous and All Multicast modes */
275 mac_ctrl_data = AT_READ_REG(hw, REG_MAC_CTRL);
277 if (netdev->flags & IFF_PROMISC) {
278 mac_ctrl_data |= MAC_CTRL_PROMIS_EN;
279 } else if (netdev->flags & IFF_ALLMULTI) {
280 mac_ctrl_data |= MAC_CTRL_MC_ALL_EN;
281 mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN;
283 mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
286 AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
288 /* clear the old settings from the multicast hash table */
289 AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
290 AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
292 /* comoute mc addresses' hash value ,and put it into hash table */
293 netdev_for_each_mc_addr(ha, netdev) {
294 hash_value = atl1e_hash_mc_addr(hw, ha->addr);
295 atl1e_hash_set(hw, hash_value);
299 static void __atl1e_rx_mode(netdev_features_t features, u32 *mac_ctrl_data)
302 if (features & NETIF_F_RXALL) {
303 /* enable RX of ALL frames */
304 *mac_ctrl_data |= MAC_CTRL_DBG;
306 /* disable RX of ALL frames */
307 *mac_ctrl_data &= ~MAC_CTRL_DBG;
311 static void atl1e_rx_mode(struct net_device *netdev,
312 netdev_features_t features)
314 struct atl1e_adapter *adapter = netdev_priv(netdev);
315 u32 mac_ctrl_data = 0;
317 netdev_dbg(adapter->netdev, "%s\n", __func__);
319 atl1e_irq_disable(adapter);
320 mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL);
321 __atl1e_rx_mode(features, &mac_ctrl_data);
322 AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data);
323 atl1e_irq_enable(adapter);
327 static void __atl1e_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data)
329 if (features & NETIF_F_HW_VLAN_CTAG_RX) {
330 /* enable VLAN tag insert/strip */
331 *mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
333 /* disable VLAN tag insert/strip */
334 *mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN;
338 static void atl1e_vlan_mode(struct net_device *netdev,
339 netdev_features_t features)
341 struct atl1e_adapter *adapter = netdev_priv(netdev);
342 u32 mac_ctrl_data = 0;
344 netdev_dbg(adapter->netdev, "%s\n", __func__);
346 atl1e_irq_disable(adapter);
347 mac_ctrl_data = AT_READ_REG(&adapter->hw, REG_MAC_CTRL);
348 __atl1e_vlan_mode(features, &mac_ctrl_data);
349 AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data);
350 atl1e_irq_enable(adapter);
353 static void atl1e_restore_vlan(struct atl1e_adapter *adapter)
355 netdev_dbg(adapter->netdev, "%s\n", __func__);
356 atl1e_vlan_mode(adapter->netdev, adapter->netdev->features);
360 * atl1e_set_mac_addr - Change the Ethernet Address of the NIC
361 * @netdev: network interface device structure
362 * @p: pointer to an address structure
364 * Returns 0 on success, negative on failure
366 static int atl1e_set_mac_addr(struct net_device *netdev, void *p)
368 struct atl1e_adapter *adapter = netdev_priv(netdev);
369 struct sockaddr *addr = p;
371 if (!is_valid_ether_addr(addr->sa_data))
372 return -EADDRNOTAVAIL;
374 if (netif_running(netdev))
377 eth_hw_addr_set(netdev, addr->sa_data);
378 memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
380 atl1e_hw_set_mac_addr(&adapter->hw);
385 static netdev_features_t atl1e_fix_features(struct net_device *netdev,
386 netdev_features_t features)
389 * Since there is no support for separate rx/tx vlan accel
390 * enable/disable make sure tx flag is always in same state as rx.
392 if (features & NETIF_F_HW_VLAN_CTAG_RX)
393 features |= NETIF_F_HW_VLAN_CTAG_TX;
395 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
400 static int atl1e_set_features(struct net_device *netdev,
401 netdev_features_t features)
403 netdev_features_t changed = netdev->features ^ features;
405 if (changed & NETIF_F_HW_VLAN_CTAG_RX)
406 atl1e_vlan_mode(netdev, features);
408 if (changed & NETIF_F_RXALL)
409 atl1e_rx_mode(netdev, features);
416 * atl1e_change_mtu - Change the Maximum Transfer Unit
417 * @netdev: network interface device structure
418 * @new_mtu: new value for maximum frame size
420 * Returns 0 on success, negative on failure
422 static int atl1e_change_mtu(struct net_device *netdev, int new_mtu)
424 struct atl1e_adapter *adapter = netdev_priv(netdev);
425 int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
428 if (netif_running(netdev)) {
429 while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
431 netdev->mtu = new_mtu;
432 adapter->hw.max_frame_size = new_mtu;
433 adapter->hw.rx_jumbo_th = (max_frame + 7) >> 3;
436 clear_bit(__AT_RESETTING, &adapter->flags);
442 * caller should hold mdio_lock
444 static int atl1e_mdio_read(struct net_device *netdev, int phy_id, int reg_num)
446 struct atl1e_adapter *adapter = netdev_priv(netdev);
449 atl1e_read_phy_reg(&adapter->hw, reg_num & MDIO_REG_ADDR_MASK, &result);
453 static void atl1e_mdio_write(struct net_device *netdev, int phy_id,
454 int reg_num, int val)
456 struct atl1e_adapter *adapter = netdev_priv(netdev);
458 if (atl1e_write_phy_reg(&adapter->hw,
459 reg_num & MDIO_REG_ADDR_MASK, val))
460 netdev_err(netdev, "write phy register failed\n");
463 static int atl1e_mii_ioctl(struct net_device *netdev,
464 struct ifreq *ifr, int cmd)
466 struct atl1e_adapter *adapter = netdev_priv(netdev);
467 struct mii_ioctl_data *data = if_mii(ifr);
471 if (!netif_running(netdev))
474 spin_lock_irqsave(&adapter->mdio_lock, flags);
481 if (atl1e_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
489 if (data->reg_num & ~(0x1F)) {
494 netdev_dbg(adapter->netdev, "<atl1e_mii_ioctl> write %x %x\n",
495 data->reg_num, data->val_in);
496 if (atl1e_write_phy_reg(&adapter->hw,
497 data->reg_num, data->val_in)) {
504 retval = -EOPNOTSUPP;
508 spin_unlock_irqrestore(&adapter->mdio_lock, flags);
513 static int atl1e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
519 return atl1e_mii_ioctl(netdev, ifr, cmd);
525 static void atl1e_setup_pcicmd(struct pci_dev *pdev)
529 pci_read_config_word(pdev, PCI_COMMAND, &cmd);
530 cmd &= ~(PCI_COMMAND_INTX_DISABLE | PCI_COMMAND_IO);
531 cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
532 pci_write_config_word(pdev, PCI_COMMAND, cmd);
535 * some motherboards BIOS(PXE/EFI) driver may set PME
536 * while they transfer control to OS (Windows/Linux)
537 * so we should clear this bit before NIC work normally
539 pci_write_config_dword(pdev, REG_PM_CTRLSTAT, 0);
544 * atl1e_alloc_queues - Allocate memory for all rings
545 * @adapter: board private structure to initialize
548 static int atl1e_alloc_queues(struct atl1e_adapter *adapter)
554 * atl1e_sw_init - Initialize general software structures (struct atl1e_adapter)
555 * @adapter: board private structure to initialize
557 * atl1e_sw_init initializes the Adapter private data structure.
558 * Fields are initialized based on PCI device information and
559 * OS network device settings (MTU size).
561 static int atl1e_sw_init(struct atl1e_adapter *adapter)
563 struct atl1e_hw *hw = &adapter->hw;
564 struct pci_dev *pdev = adapter->pdev;
565 u32 phy_status_data = 0;
568 adapter->link_speed = SPEED_0; /* hardware init */
569 adapter->link_duplex = FULL_DUPLEX;
570 adapter->num_rx_queues = 1;
572 /* PCI config space info */
573 hw->vendor_id = pdev->vendor;
574 hw->device_id = pdev->device;
575 hw->subsystem_vendor_id = pdev->subsystem_vendor;
576 hw->subsystem_id = pdev->subsystem_device;
577 hw->revision_id = pdev->revision;
579 pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
581 phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS);
583 if (hw->revision_id >= 0xF0) {
584 hw->nic_type = athr_l2e_revB;
586 if (phy_status_data & PHY_STATUS_100M)
587 hw->nic_type = athr_l1e;
589 hw->nic_type = athr_l2e_revA;
592 phy_status_data = AT_READ_REG(hw, REG_PHY_STATUS);
594 if (phy_status_data & PHY_STATUS_EMI_CA)
599 hw->phy_configured = false;
600 hw->preamble_len = 7;
601 hw->max_frame_size = adapter->netdev->mtu;
602 hw->rx_jumbo_th = (hw->max_frame_size + ETH_HLEN +
603 VLAN_HLEN + ETH_FCS_LEN + 7) >> 3;
605 hw->rrs_type = atl1e_rrs_disable;
606 hw->indirect_tab = 0;
611 hw->ict = 50000; /* 100ms */
612 hw->smb_timer = 200000; /* 200ms */
615 hw->tpd_thresh = adapter->tx_ring.count / 2;
616 hw->rx_count_down = 4; /* 2us resolution */
617 hw->tx_count_down = hw->imt * 4 / 3;
618 hw->dmar_block = atl1e_dma_req_1024;
619 hw->dmaw_block = atl1e_dma_req_1024;
620 hw->dmar_dly_cnt = 15;
621 hw->dmaw_dly_cnt = 4;
623 if (atl1e_alloc_queues(adapter)) {
624 netdev_err(adapter->netdev, "Unable to allocate memory for queues\n");
628 atomic_set(&adapter->irq_sem, 1);
629 spin_lock_init(&adapter->mdio_lock);
631 set_bit(__AT_DOWN, &adapter->flags);
637 * atl1e_clean_tx_ring - Free Tx-skb
638 * @adapter: board private structure
640 static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter)
642 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
643 struct atl1e_tx_buffer *tx_buffer = NULL;
644 struct pci_dev *pdev = adapter->pdev;
645 u16 index, ring_count;
647 if (tx_ring->desc == NULL || tx_ring->tx_buffer == NULL)
650 ring_count = tx_ring->count;
651 /* first unmmap dma */
652 for (index = 0; index < ring_count; index++) {
653 tx_buffer = &tx_ring->tx_buffer[index];
654 if (tx_buffer->dma) {
655 if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE)
656 dma_unmap_single(&pdev->dev, tx_buffer->dma,
659 else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE)
660 dma_unmap_page(&pdev->dev, tx_buffer->dma,
666 /* second free skb */
667 for (index = 0; index < ring_count; index++) {
668 tx_buffer = &tx_ring->tx_buffer[index];
669 if (tx_buffer->skb) {
670 dev_kfree_skb_any(tx_buffer->skb);
671 tx_buffer->skb = NULL;
674 /* Zero out Tx-buffers */
675 memset(tx_ring->desc, 0, sizeof(struct atl1e_tpd_desc) *
677 memset(tx_ring->tx_buffer, 0, sizeof(struct atl1e_tx_buffer) *
682 * atl1e_clean_rx_ring - Free rx-reservation skbs
683 * @adapter: board private structure
685 static void atl1e_clean_rx_ring(struct atl1e_adapter *adapter)
687 struct atl1e_rx_ring *rx_ring =
689 struct atl1e_rx_page_desc *rx_page_desc = rx_ring->rx_page_desc;
693 if (adapter->ring_vir_addr == NULL)
695 /* Zero out the descriptor ring */
696 for (i = 0; i < adapter->num_rx_queues; i++) {
697 for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) {
698 if (rx_page_desc[i].rx_page[j].addr != NULL) {
699 memset(rx_page_desc[i].rx_page[j].addr, 0,
700 rx_ring->real_page_size);
706 static void atl1e_cal_ring_size(struct atl1e_adapter *adapter, u32 *ring_size)
708 *ring_size = ((u32)(adapter->tx_ring.count *
709 sizeof(struct atl1e_tpd_desc) + 7
710 /* tx ring, qword align */
711 + adapter->rx_ring.real_page_size * AT_PAGE_NUM_PER_QUEUE *
712 adapter->num_rx_queues + 31
713 /* rx ring, 32 bytes align */
714 + (1 + AT_PAGE_NUM_PER_QUEUE * adapter->num_rx_queues) *
716 /* tx, rx cmd, dword align */
719 static void atl1e_init_ring_resources(struct atl1e_adapter *adapter)
721 struct atl1e_rx_ring *rx_ring = NULL;
723 rx_ring = &adapter->rx_ring;
725 rx_ring->real_page_size = adapter->rx_ring.page_size
726 + adapter->hw.max_frame_size
727 + ETH_HLEN + VLAN_HLEN
729 rx_ring->real_page_size = roundup(rx_ring->real_page_size, 32);
730 atl1e_cal_ring_size(adapter, &adapter->ring_size);
732 adapter->ring_vir_addr = NULL;
733 adapter->rx_ring.desc = NULL;
734 rwlock_init(&adapter->tx_ring.tx_lock);
738 * Read / Write Ptr Initialize:
740 static void atl1e_init_ring_ptrs(struct atl1e_adapter *adapter)
742 struct atl1e_tx_ring *tx_ring = NULL;
743 struct atl1e_rx_ring *rx_ring = NULL;
744 struct atl1e_rx_page_desc *rx_page_desc = NULL;
747 tx_ring = &adapter->tx_ring;
748 rx_ring = &adapter->rx_ring;
749 rx_page_desc = rx_ring->rx_page_desc;
751 tx_ring->next_to_use = 0;
752 atomic_set(&tx_ring->next_to_clean, 0);
754 for (i = 0; i < adapter->num_rx_queues; i++) {
755 rx_page_desc[i].rx_using = 0;
756 rx_page_desc[i].rx_nxseq = 0;
757 for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) {
758 *rx_page_desc[i].rx_page[j].write_offset_addr = 0;
759 rx_page_desc[i].rx_page[j].read_offset = 0;
765 * atl1e_free_ring_resources - Free Tx / RX descriptor Resources
766 * @adapter: board private structure
768 * Free all transmit software resources
770 static void atl1e_free_ring_resources(struct atl1e_adapter *adapter)
772 struct pci_dev *pdev = adapter->pdev;
774 atl1e_clean_tx_ring(adapter);
775 atl1e_clean_rx_ring(adapter);
777 if (adapter->ring_vir_addr) {
778 dma_free_coherent(&pdev->dev, adapter->ring_size,
779 adapter->ring_vir_addr, adapter->ring_dma);
780 adapter->ring_vir_addr = NULL;
783 if (adapter->tx_ring.tx_buffer) {
784 kfree(adapter->tx_ring.tx_buffer);
785 adapter->tx_ring.tx_buffer = NULL;
790 * atl1e_setup_ring_resources - allocate Tx / RX descriptor resources
791 * @adapter: board private structure
793 * Return 0 on success, negative on failure
795 static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter)
797 struct pci_dev *pdev = adapter->pdev;
798 struct atl1e_tx_ring *tx_ring;
799 struct atl1e_rx_ring *rx_ring;
800 struct atl1e_rx_page_desc *rx_page_desc;
805 if (adapter->ring_vir_addr != NULL)
806 return 0; /* alloced already */
808 tx_ring = &adapter->tx_ring;
809 rx_ring = &adapter->rx_ring;
811 /* real ring DMA buffer */
813 size = adapter->ring_size;
814 adapter->ring_vir_addr = dma_alloc_coherent(&pdev->dev,
816 &adapter->ring_dma, GFP_KERNEL);
817 if (adapter->ring_vir_addr == NULL) {
818 netdev_err(adapter->netdev,
819 "dma_alloc_coherent failed, size = D%d\n", size);
823 rx_page_desc = rx_ring->rx_page_desc;
826 tx_ring->dma = roundup(adapter->ring_dma, 8);
827 offset = tx_ring->dma - adapter->ring_dma;
828 tx_ring->desc = adapter->ring_vir_addr + offset;
829 size = sizeof(struct atl1e_tx_buffer) * (tx_ring->count);
830 tx_ring->tx_buffer = kzalloc(size, GFP_KERNEL);
831 if (tx_ring->tx_buffer == NULL) {
837 offset += (sizeof(struct atl1e_tpd_desc) * tx_ring->count);
838 offset = roundup(offset, 32);
840 for (i = 0; i < adapter->num_rx_queues; i++) {
841 for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) {
842 rx_page_desc[i].rx_page[j].dma =
843 adapter->ring_dma + offset;
844 rx_page_desc[i].rx_page[j].addr =
845 adapter->ring_vir_addr + offset;
846 offset += rx_ring->real_page_size;
850 /* Init CMB dma address */
851 tx_ring->cmb_dma = adapter->ring_dma + offset;
852 tx_ring->cmb = adapter->ring_vir_addr + offset;
853 offset += sizeof(u32);
855 for (i = 0; i < adapter->num_rx_queues; i++) {
856 for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) {
857 rx_page_desc[i].rx_page[j].write_offset_dma =
858 adapter->ring_dma + offset;
859 rx_page_desc[i].rx_page[j].write_offset_addr =
860 adapter->ring_vir_addr + offset;
861 offset += sizeof(u32);
865 if (unlikely(offset > adapter->ring_size)) {
866 netdev_err(adapter->netdev, "offset(%d) > ring size(%d) !!\n",
867 offset, adapter->ring_size);
874 kfree(tx_ring->tx_buffer);
875 tx_ring->tx_buffer = NULL;
877 if (adapter->ring_vir_addr != NULL) {
878 dma_free_coherent(&pdev->dev, adapter->ring_size,
879 adapter->ring_vir_addr, adapter->ring_dma);
880 adapter->ring_vir_addr = NULL;
885 static inline void atl1e_configure_des_ring(struct atl1e_adapter *adapter)
888 struct atl1e_hw *hw = &adapter->hw;
889 struct atl1e_rx_ring *rx_ring = &adapter->rx_ring;
890 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
891 struct atl1e_rx_page_desc *rx_page_desc = NULL;
894 AT_WRITE_REG(hw, REG_DESC_BASE_ADDR_HI,
895 (u32)((adapter->ring_dma & AT_DMA_HI_ADDR_MASK) >> 32));
896 AT_WRITE_REG(hw, REG_TPD_BASE_ADDR_LO,
897 (u32)((tx_ring->dma) & AT_DMA_LO_ADDR_MASK));
898 AT_WRITE_REG(hw, REG_TPD_RING_SIZE, (u16)(tx_ring->count));
899 AT_WRITE_REG(hw, REG_HOST_TX_CMB_LO,
900 (u32)((tx_ring->cmb_dma) & AT_DMA_LO_ADDR_MASK));
902 rx_page_desc = rx_ring->rx_page_desc;
903 /* RXF Page Physical address / Page Length */
904 for (i = 0; i < AT_MAX_RECEIVE_QUEUE; i++) {
905 AT_WRITE_REG(hw, atl1e_rx_page_hi_addr_regs[i],
906 (u32)((adapter->ring_dma &
907 AT_DMA_HI_ADDR_MASK) >> 32));
908 for (j = 0; j < AT_PAGE_NUM_PER_QUEUE; j++) {
912 page_phy_addr = rx_page_desc[i].rx_page[j].dma;
914 rx_page_desc[i].rx_page[j].write_offset_dma;
916 AT_WRITE_REG(hw, atl1e_rx_page_lo_addr_regs[i][j],
917 page_phy_addr & AT_DMA_LO_ADDR_MASK);
918 AT_WRITE_REG(hw, atl1e_rx_page_write_offset_regs[i][j],
919 offset_phy_addr & AT_DMA_LO_ADDR_MASK);
920 AT_WRITE_REGB(hw, atl1e_rx_page_vld_regs[i][j], 1);
924 AT_WRITE_REG(hw, REG_HOST_RXFPAGE_SIZE, rx_ring->page_size);
925 /* Load all of base address above */
926 AT_WRITE_REG(hw, REG_LOAD_PTR, 1);
929 static inline void atl1e_configure_tx(struct atl1e_adapter *adapter)
931 struct atl1e_hw *hw = &adapter->hw;
932 u32 dev_ctrl_data = 0;
933 u32 max_pay_load = 0;
934 u32 jumbo_thresh = 0;
935 u32 extra_size = 0; /* Jumbo frame threshold in QWORD unit */
937 /* configure TXQ param */
938 if (hw->nic_type != athr_l2e_revB) {
939 extra_size = ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN;
940 if (hw->max_frame_size <= 1500) {
941 jumbo_thresh = hw->max_frame_size + extra_size;
942 } else if (hw->max_frame_size < 6*1024) {
944 (hw->max_frame_size + extra_size) * 2 / 3;
946 jumbo_thresh = (hw->max_frame_size + extra_size) / 2;
948 AT_WRITE_REG(hw, REG_TX_EARLY_TH, (jumbo_thresh + 7) >> 3);
951 dev_ctrl_data = AT_READ_REG(hw, REG_DEVICE_CTRL);
953 max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_PAYLOAD_SHIFT)) &
954 DEVICE_CTRL_MAX_PAYLOAD_MASK;
956 hw->dmaw_block = min_t(u32, max_pay_load, hw->dmaw_block);
958 max_pay_load = ((dev_ctrl_data >> DEVICE_CTRL_MAX_RREQ_SZ_SHIFT)) &
959 DEVICE_CTRL_MAX_RREQ_SZ_MASK;
960 hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block);
962 if (hw->nic_type != athr_l2e_revB)
963 AT_WRITE_REGW(hw, REG_TXQ_CTRL + 2,
964 atl1e_pay_load_size[hw->dmar_block]);
966 AT_WRITE_REGW(hw, REG_TXQ_CTRL,
967 (((u16)hw->tpd_burst & TXQ_CTRL_NUM_TPD_BURST_MASK)
968 << TXQ_CTRL_NUM_TPD_BURST_SHIFT)
969 | TXQ_CTRL_ENH_MODE | TXQ_CTRL_EN);
972 static inline void atl1e_configure_rx(struct atl1e_adapter *adapter)
974 struct atl1e_hw *hw = &adapter->hw;
978 u32 rxf_thresh_data = 0;
979 u32 rxq_ctrl_data = 0;
981 if (hw->nic_type != athr_l2e_revB) {
982 AT_WRITE_REGW(hw, REG_RXQ_JMBOSZ_RRDTIM,
983 (u16)((hw->rx_jumbo_th & RXQ_JMBOSZ_TH_MASK) <<
984 RXQ_JMBOSZ_TH_SHIFT |
985 (1 & RXQ_JMBO_LKAH_MASK) <<
986 RXQ_JMBO_LKAH_SHIFT));
988 rxf_len = AT_READ_REG(hw, REG_SRAM_RXF_LEN);
989 rxf_high = rxf_len * 4 / 5;
990 rxf_low = rxf_len / 5;
991 rxf_thresh_data = ((rxf_high & RXQ_RXF_PAUSE_TH_HI_MASK)
992 << RXQ_RXF_PAUSE_TH_HI_SHIFT) |
993 ((rxf_low & RXQ_RXF_PAUSE_TH_LO_MASK)
994 << RXQ_RXF_PAUSE_TH_LO_SHIFT);
996 AT_WRITE_REG(hw, REG_RXQ_RXF_PAUSE_THRESH, rxf_thresh_data);
1000 AT_WRITE_REG(hw, REG_IDT_TABLE, hw->indirect_tab);
1001 AT_WRITE_REG(hw, REG_BASE_CPU_NUMBER, hw->base_cpu);
1003 if (hw->rrs_type & atl1e_rrs_ipv4)
1004 rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4;
1006 if (hw->rrs_type & atl1e_rrs_ipv4_tcp)
1007 rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV4_TCP;
1009 if (hw->rrs_type & atl1e_rrs_ipv6)
1010 rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6;
1012 if (hw->rrs_type & atl1e_rrs_ipv6_tcp)
1013 rxq_ctrl_data |= RXQ_CTRL_HASH_TYPE_IPV6_TCP;
1015 if (hw->rrs_type != atl1e_rrs_disable)
1017 (RXQ_CTRL_HASH_ENABLE | RXQ_CTRL_RSS_MODE_MQUESINT);
1019 rxq_ctrl_data |= RXQ_CTRL_IPV6_XSUM_VERIFY_EN | RXQ_CTRL_PBA_ALIGN_32 |
1020 RXQ_CTRL_CUT_THRU_EN | RXQ_CTRL_EN;
1022 AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data);
1025 static inline void atl1e_configure_dma(struct atl1e_adapter *adapter)
1027 struct atl1e_hw *hw = &adapter->hw;
1028 u32 dma_ctrl_data = 0;
1030 dma_ctrl_data = DMA_CTRL_RXCMB_EN;
1031 dma_ctrl_data |= (((u32)hw->dmar_block) & DMA_CTRL_DMAR_BURST_LEN_MASK)
1032 << DMA_CTRL_DMAR_BURST_LEN_SHIFT;
1033 dma_ctrl_data |= (((u32)hw->dmaw_block) & DMA_CTRL_DMAW_BURST_LEN_MASK)
1034 << DMA_CTRL_DMAW_BURST_LEN_SHIFT;
1035 dma_ctrl_data |= DMA_CTRL_DMAR_REQ_PRI | DMA_CTRL_DMAR_OUT_ORDER;
1036 dma_ctrl_data |= (((u32)hw->dmar_dly_cnt) & DMA_CTRL_DMAR_DLY_CNT_MASK)
1037 << DMA_CTRL_DMAR_DLY_CNT_SHIFT;
1038 dma_ctrl_data |= (((u32)hw->dmaw_dly_cnt) & DMA_CTRL_DMAW_DLY_CNT_MASK)
1039 << DMA_CTRL_DMAW_DLY_CNT_SHIFT;
1041 AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data);
1044 static void atl1e_setup_mac_ctrl(struct atl1e_adapter *adapter)
1047 struct atl1e_hw *hw = &adapter->hw;
1048 struct net_device *netdev = adapter->netdev;
1050 /* Config MAC CTRL Register */
1051 value = MAC_CTRL_TX_EN |
1054 if (FULL_DUPLEX == adapter->link_duplex)
1055 value |= MAC_CTRL_DUPLX;
1057 value |= ((u32)((SPEED_1000 == adapter->link_speed) ?
1058 MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100) <<
1059 MAC_CTRL_SPEED_SHIFT);
1060 value |= (MAC_CTRL_TX_FLOW | MAC_CTRL_RX_FLOW);
1062 value |= (MAC_CTRL_ADD_CRC | MAC_CTRL_PAD);
1063 value |= (((u32)adapter->hw.preamble_len &
1064 MAC_CTRL_PRMLEN_MASK) << MAC_CTRL_PRMLEN_SHIFT);
1066 __atl1e_vlan_mode(netdev->features, &value);
1068 value |= MAC_CTRL_BC_EN;
1069 if (netdev->flags & IFF_PROMISC)
1070 value |= MAC_CTRL_PROMIS_EN;
1071 if (netdev->flags & IFF_ALLMULTI)
1072 value |= MAC_CTRL_MC_ALL_EN;
1073 if (netdev->features & NETIF_F_RXALL)
1074 value |= MAC_CTRL_DBG;
1075 AT_WRITE_REG(hw, REG_MAC_CTRL, value);
1079 * atl1e_configure - Configure Transmit&Receive Unit after Reset
1080 * @adapter: board private structure
1082 * Configure the Tx /Rx unit of the MAC after a reset.
1084 static int atl1e_configure(struct atl1e_adapter *adapter)
1086 struct atl1e_hw *hw = &adapter->hw;
1088 u32 intr_status_data = 0;
1090 /* clear interrupt status */
1091 AT_WRITE_REG(hw, REG_ISR, ~0);
1093 /* 1. set MAC Address */
1094 atl1e_hw_set_mac_addr(hw);
1096 /* 2. Init the Multicast HASH table done by set_muti */
1098 /* 3. Clear any WOL status */
1099 AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
1101 /* 4. Descripter Ring BaseMem/Length/Read ptr/Write ptr
1102 * TPD Ring/SMB/RXF0 Page CMBs, they use the same
1103 * High 32bits memory */
1104 atl1e_configure_des_ring(adapter);
1106 /* 5. set Interrupt Moderator Timer */
1107 AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER_INIT, hw->imt);
1108 AT_WRITE_REGW(hw, REG_IRQ_MODU_TIMER2_INIT, hw->imt);
1109 AT_WRITE_REG(hw, REG_MASTER_CTRL, MASTER_CTRL_LED_MODE |
1110 MASTER_CTRL_ITIMER_EN | MASTER_CTRL_ITIMER2_EN);
1112 /* 6. rx/tx threshold to trig interrupt */
1113 AT_WRITE_REGW(hw, REG_TRIG_RRD_THRESH, hw->rrd_thresh);
1114 AT_WRITE_REGW(hw, REG_TRIG_TPD_THRESH, hw->tpd_thresh);
1115 AT_WRITE_REGW(hw, REG_TRIG_RXTIMER, hw->rx_count_down);
1116 AT_WRITE_REGW(hw, REG_TRIG_TXTIMER, hw->tx_count_down);
1118 /* 7. set Interrupt Clear Timer */
1119 AT_WRITE_REGW(hw, REG_CMBDISDMA_TIMER, hw->ict);
1122 AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN +
1123 VLAN_HLEN + ETH_FCS_LEN);
1125 /* 9. config TXQ early tx threshold */
1126 atl1e_configure_tx(adapter);
1128 /* 10. config RXQ */
1129 atl1e_configure_rx(adapter);
1131 /* 11. config DMA Engine */
1132 atl1e_configure_dma(adapter);
1134 /* 12. smb timer to trig interrupt */
1135 AT_WRITE_REG(hw, REG_SMB_STAT_TIMER, hw->smb_timer);
1137 intr_status_data = AT_READ_REG(hw, REG_ISR);
1138 if (unlikely((intr_status_data & ISR_PHY_LINKDOWN) != 0)) {
1139 netdev_err(adapter->netdev,
1140 "atl1e_configure failed, PCIE phy link down\n");
1144 AT_WRITE_REG(hw, REG_ISR, 0x7fffffff);
1149 * atl1e_get_stats - Get System Network Statistics
1150 * @netdev: network interface device structure
1152 * Returns the address of the device statistics structure.
1153 * The statistics are actually updated from the timer callback.
1155 static struct net_device_stats *atl1e_get_stats(struct net_device *netdev)
1157 struct atl1e_adapter *adapter = netdev_priv(netdev);
1158 struct atl1e_hw_stats *hw_stats = &adapter->hw_stats;
1159 struct net_device_stats *net_stats = &netdev->stats;
1161 net_stats->rx_bytes = hw_stats->rx_byte_cnt;
1162 net_stats->tx_bytes = hw_stats->tx_byte_cnt;
1163 net_stats->multicast = hw_stats->rx_mcast;
1164 net_stats->collisions = hw_stats->tx_1_col +
1165 hw_stats->tx_2_col +
1166 hw_stats->tx_late_col +
1167 hw_stats->tx_abort_col;
1169 net_stats->rx_errors = hw_stats->rx_frag +
1170 hw_stats->rx_fcs_err +
1171 hw_stats->rx_len_err +
1172 hw_stats->rx_sz_ov +
1173 hw_stats->rx_rrd_ov +
1174 hw_stats->rx_align_err +
1175 hw_stats->rx_rxf_ov;
1177 net_stats->rx_fifo_errors = hw_stats->rx_rxf_ov;
1178 net_stats->rx_length_errors = hw_stats->rx_len_err;
1179 net_stats->rx_crc_errors = hw_stats->rx_fcs_err;
1180 net_stats->rx_frame_errors = hw_stats->rx_align_err;
1181 net_stats->rx_dropped = hw_stats->rx_rrd_ov;
1183 net_stats->tx_errors = hw_stats->tx_late_col +
1184 hw_stats->tx_abort_col +
1185 hw_stats->tx_underrun +
1188 net_stats->tx_fifo_errors = hw_stats->tx_underrun;
1189 net_stats->tx_aborted_errors = hw_stats->tx_abort_col;
1190 net_stats->tx_window_errors = hw_stats->tx_late_col;
1192 net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors;
1193 net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors;
1198 static void atl1e_update_hw_stats(struct atl1e_adapter *adapter)
1200 u16 hw_reg_addr = 0;
1201 unsigned long *stats_item = NULL;
1203 /* update rx status */
1204 hw_reg_addr = REG_MAC_RX_STATUS_BIN;
1205 stats_item = &adapter->hw_stats.rx_ok;
1206 while (hw_reg_addr <= REG_MAC_RX_STATUS_END) {
1207 *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr);
1211 /* update tx status */
1212 hw_reg_addr = REG_MAC_TX_STATUS_BIN;
1213 stats_item = &adapter->hw_stats.tx_ok;
1214 while (hw_reg_addr <= REG_MAC_TX_STATUS_END) {
1215 *stats_item += AT_READ_REG(&adapter->hw, hw_reg_addr);
1221 static inline void atl1e_clear_phy_int(struct atl1e_adapter *adapter)
1225 spin_lock(&adapter->mdio_lock);
1226 atl1e_read_phy_reg(&adapter->hw, MII_INT_STATUS, &phy_data);
1227 spin_unlock(&adapter->mdio_lock);
1230 static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter)
1232 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
1233 struct atl1e_tx_buffer *tx_buffer = NULL;
1234 u16 hw_next_to_clean = AT_READ_REGW(&adapter->hw, REG_TPD_CONS_IDX);
1235 u16 next_to_clean = atomic_read(&tx_ring->next_to_clean);
1237 while (next_to_clean != hw_next_to_clean) {
1238 tx_buffer = &tx_ring->tx_buffer[next_to_clean];
1239 if (tx_buffer->dma) {
1240 if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE)
1241 dma_unmap_single(&adapter->pdev->dev,
1245 else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE)
1246 dma_unmap_page(&adapter->pdev->dev,
1253 if (tx_buffer->skb) {
1254 dev_consume_skb_irq(tx_buffer->skb);
1255 tx_buffer->skb = NULL;
1258 if (++next_to_clean == tx_ring->count)
1262 atomic_set(&tx_ring->next_to_clean, next_to_clean);
1264 if (netif_queue_stopped(adapter->netdev) &&
1265 netif_carrier_ok(adapter->netdev)) {
1266 netif_wake_queue(adapter->netdev);
1273 * atl1e_intr - Interrupt Handler
1274 * @irq: interrupt number
1275 * @data: pointer to a network interface device structure
1277 static irqreturn_t atl1e_intr(int irq, void *data)
1279 struct net_device *netdev = data;
1280 struct atl1e_adapter *adapter = netdev_priv(netdev);
1281 struct atl1e_hw *hw = &adapter->hw;
1282 int max_ints = AT_MAX_INT_WORK;
1283 int handled = IRQ_NONE;
1287 status = AT_READ_REG(hw, REG_ISR);
1288 if ((status & IMR_NORMAL_MASK) == 0 ||
1289 (status & ISR_DIS_INT) != 0) {
1290 if (max_ints != AT_MAX_INT_WORK)
1291 handled = IRQ_HANDLED;
1295 if (status & ISR_GPHY)
1296 atl1e_clear_phy_int(adapter);
1298 AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
1300 handled = IRQ_HANDLED;
1301 /* check if PCIE PHY Link down */
1302 if (status & ISR_PHY_LINKDOWN) {
1303 netdev_err(adapter->netdev,
1304 "pcie phy linkdown %x\n", status);
1305 if (netif_running(adapter->netdev)) {
1307 atl1e_irq_reset(adapter);
1308 schedule_work(&adapter->reset_task);
1313 /* check if DMA read/write error */
1314 if (status & (ISR_DMAR_TO_RST | ISR_DMAW_TO_RST)) {
1315 netdev_err(adapter->netdev,
1316 "PCIE DMA RW error (status = 0x%x)\n",
1318 atl1e_irq_reset(adapter);
1319 schedule_work(&adapter->reset_task);
1323 if (status & ISR_SMB)
1324 atl1e_update_hw_stats(adapter);
1327 if (status & (ISR_GPHY | ISR_MANUAL)) {
1328 netdev->stats.tx_carrier_errors++;
1329 atl1e_link_chg_event(adapter);
1333 /* transmit event */
1334 if (status & ISR_TX_EVENT)
1335 atl1e_clean_tx_irq(adapter);
1337 if (status & ISR_RX_EVENT) {
1339 * disable rx interrupts, without
1340 * the synchronize_irq bit
1342 AT_WRITE_REG(hw, REG_IMR,
1343 IMR_NORMAL_MASK & ~ISR_RX_EVENT);
1345 if (likely(napi_schedule_prep(
1347 __napi_schedule(&adapter->napi);
1349 } while (--max_ints > 0);
1350 /* re-enable Interrupt*/
1351 AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
1356 static inline void atl1e_rx_checksum(struct atl1e_adapter *adapter,
1357 struct sk_buff *skb, struct atl1e_recv_ret_status *prrs)
1359 u8 *packet = (u8 *)(prrs + 1);
1361 u16 head_len = ETH_HLEN;
1365 skb_checksum_none_assert(skb);
1366 pkt_flags = prrs->pkt_flag;
1367 err_flags = prrs->err_flag;
1368 if (((pkt_flags & RRS_IS_IPV4) || (pkt_flags & RRS_IS_IPV6)) &&
1369 ((pkt_flags & RRS_IS_TCP) || (pkt_flags & RRS_IS_UDP))) {
1370 if (pkt_flags & RRS_IS_IPV4) {
1371 if (pkt_flags & RRS_IS_802_3)
1373 iph = (struct iphdr *) (packet + head_len);
1374 if (iph->frag_off != 0 && !(pkt_flags & RRS_IS_IP_DF))
1377 if (!(err_flags & (RRS_ERR_IP_CSUM | RRS_ERR_L4_CSUM))) {
1378 skb->ip_summed = CHECKSUM_UNNECESSARY;
1387 static struct atl1e_rx_page *atl1e_get_rx_page(struct atl1e_adapter *adapter,
1390 struct atl1e_rx_page_desc *rx_page_desc =
1391 (struct atl1e_rx_page_desc *) adapter->rx_ring.rx_page_desc;
1392 u8 rx_using = rx_page_desc[que].rx_using;
1394 return &(rx_page_desc[que].rx_page[rx_using]);
1397 static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
1398 int *work_done, int work_to_do)
1400 struct net_device *netdev = adapter->netdev;
1401 struct atl1e_rx_ring *rx_ring = &adapter->rx_ring;
1402 struct atl1e_rx_page_desc *rx_page_desc =
1403 (struct atl1e_rx_page_desc *) rx_ring->rx_page_desc;
1404 struct sk_buff *skb = NULL;
1405 struct atl1e_rx_page *rx_page = atl1e_get_rx_page(adapter, que);
1406 u32 packet_size, write_offset;
1407 struct atl1e_recv_ret_status *prrs;
1409 write_offset = *(rx_page->write_offset_addr);
1410 if (likely(rx_page->read_offset < write_offset)) {
1412 if (*work_done >= work_to_do)
1415 /* get new packet's rrs */
1416 prrs = (struct atl1e_recv_ret_status *) (rx_page->addr +
1417 rx_page->read_offset);
1418 /* check sequence number */
1419 if (prrs->seq_num != rx_page_desc[que].rx_nxseq) {
1421 "rx sequence number error (rx=%d) (expect=%d)\n",
1423 rx_page_desc[que].rx_nxseq);
1424 rx_page_desc[que].rx_nxseq++;
1425 /* just for debug use */
1426 AT_WRITE_REG(&adapter->hw, REG_DEBUG_DATA0,
1427 (((u32)prrs->seq_num) << 16) |
1428 rx_page_desc[que].rx_nxseq);
1431 rx_page_desc[que].rx_nxseq++;
1434 if ((prrs->pkt_flag & RRS_IS_ERR_FRAME) &&
1435 !(netdev->features & NETIF_F_RXALL)) {
1436 if (prrs->err_flag & (RRS_ERR_BAD_CRC |
1437 RRS_ERR_DRIBBLE | RRS_ERR_CODE |
1439 /* hardware error, discard this packet*/
1441 "rx packet desc error %x\n",
1442 *((u32 *)prrs + 1));
1447 packet_size = ((prrs->word1 >> RRS_PKT_SIZE_SHIFT) &
1449 if (likely(!(netdev->features & NETIF_F_RXFCS)))
1450 packet_size -= 4; /* CRC */
1452 skb = netdev_alloc_skb_ip_align(netdev, packet_size);
1456 memcpy(skb->data, (u8 *)(prrs + 1), packet_size);
1457 skb_put(skb, packet_size);
1458 skb->protocol = eth_type_trans(skb, netdev);
1459 atl1e_rx_checksum(adapter, skb, prrs);
1461 if (prrs->pkt_flag & RRS_IS_VLAN_TAG) {
1462 u16 vlan_tag = (prrs->vtag >> 4) |
1463 ((prrs->vtag & 7) << 13) |
1464 ((prrs->vtag & 8) << 9);
1466 "RXD VLAN TAG<RRD>=0x%04x\n",
1468 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
1470 napi_gro_receive(&adapter->napi, skb);
1473 /* skip current packet whether it's ok or not. */
1474 rx_page->read_offset +=
1475 (((u32)((prrs->word1 >> RRS_PKT_SIZE_SHIFT) &
1476 RRS_PKT_SIZE_MASK) +
1477 sizeof(struct atl1e_recv_ret_status) + 31) &
1480 if (rx_page->read_offset >= rx_ring->page_size) {
1481 /* mark this page clean */
1485 rx_page->read_offset =
1486 *(rx_page->write_offset_addr) = 0;
1487 rx_using = rx_page_desc[que].rx_using;
1489 atl1e_rx_page_vld_regs[que][rx_using];
1490 AT_WRITE_REGB(&adapter->hw, reg_addr, 1);
1491 rx_page_desc[que].rx_using ^= 1;
1492 rx_page = atl1e_get_rx_page(adapter, que);
1494 write_offset = *(rx_page->write_offset_addr);
1495 } while (rx_page->read_offset < write_offset);
1501 if (!test_bit(__AT_DOWN, &adapter->flags))
1502 schedule_work(&adapter->reset_task);
1506 * atl1e_clean - NAPI Rx polling callback
1508 * @budget: number of packets to clean
1510 static int atl1e_clean(struct napi_struct *napi, int budget)
1512 struct atl1e_adapter *adapter =
1513 container_of(napi, struct atl1e_adapter, napi);
1517 /* Keep link state information with original netdev */
1518 if (!netif_carrier_ok(adapter->netdev))
1521 atl1e_clean_rx_irq(adapter, 0, &work_done, budget);
1523 /* If no Tx and not enough Rx work done, exit the polling mode */
1524 if (work_done < budget) {
1526 napi_complete_done(napi, work_done);
1527 imr_data = AT_READ_REG(&adapter->hw, REG_IMR);
1528 AT_WRITE_REG(&adapter->hw, REG_IMR, imr_data | ISR_RX_EVENT);
1530 if (test_bit(__AT_DOWN, &adapter->flags)) {
1531 atomic_dec(&adapter->irq_sem);
1532 netdev_err(adapter->netdev,
1533 "atl1e_clean is called when AT_DOWN\n");
1535 /* reenable RX intr */
1536 /*atl1e_irq_enable(adapter); */
1542 #ifdef CONFIG_NET_POLL_CONTROLLER
1545 * Polling 'interrupt' - used by things like netconsole to send skbs
1546 * without having to re-enable interrupts. It's not called while
1547 * the interrupt routine is executing.
1549 static void atl1e_netpoll(struct net_device *netdev)
1551 struct atl1e_adapter *adapter = netdev_priv(netdev);
1553 disable_irq(adapter->pdev->irq);
1554 atl1e_intr(adapter->pdev->irq, netdev);
1555 enable_irq(adapter->pdev->irq);
1559 static inline u16 atl1e_tpd_avail(struct atl1e_adapter *adapter)
1561 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
1562 u16 next_to_use = 0;
1563 u16 next_to_clean = 0;
1565 next_to_clean = atomic_read(&tx_ring->next_to_clean);
1566 next_to_use = tx_ring->next_to_use;
1568 return (u16)(next_to_clean > next_to_use) ?
1569 (next_to_clean - next_to_use - 1) :
1570 (tx_ring->count + next_to_clean - next_to_use - 1);
1574 * get next usable tpd
1575 * Note: should call atl1e_tdp_avail to make sure
1576 * there is enough tpd to use
1578 static struct atl1e_tpd_desc *atl1e_get_tpd(struct atl1e_adapter *adapter)
1580 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
1581 u16 next_to_use = 0;
1583 next_to_use = tx_ring->next_to_use;
1584 if (++tx_ring->next_to_use == tx_ring->count)
1585 tx_ring->next_to_use = 0;
1587 memset(&tx_ring->desc[next_to_use], 0, sizeof(struct atl1e_tpd_desc));
1588 return &tx_ring->desc[next_to_use];
1591 static struct atl1e_tx_buffer *
1592 atl1e_get_tx_buffer(struct atl1e_adapter *adapter, struct atl1e_tpd_desc *tpd)
1594 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
1596 return &tx_ring->tx_buffer[tpd - tx_ring->desc];
1599 /* Calculate the transmit packet descript needed*/
1600 static u16 atl1e_cal_tdp_req(const struct sk_buff *skb)
1605 u16 proto_hdr_len = 0;
1607 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
1608 fg_size = skb_frag_size(&skb_shinfo(skb)->frags[i]);
1609 tpd_req += ((fg_size + MAX_TX_BUF_LEN - 1) >> MAX_TX_BUF_SHIFT);
1612 if (skb_is_gso(skb)) {
1613 if (skb->protocol == htons(ETH_P_IP) ||
1614 (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6)) {
1615 proto_hdr_len = skb_tcp_all_headers(skb);
1616 if (proto_hdr_len < skb_headlen(skb)) {
1617 tpd_req += ((skb_headlen(skb) - proto_hdr_len +
1618 MAX_TX_BUF_LEN - 1) >>
1627 static int atl1e_tso_csum(struct atl1e_adapter *adapter,
1628 struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
1630 unsigned short offload_type;
1634 if (skb_is_gso(skb)) {
1637 err = skb_cow_head(skb, 0);
1641 offload_type = skb_shinfo(skb)->gso_type;
1643 if (offload_type & SKB_GSO_TCPV4) {
1644 real_len = (((unsigned char *)ip_hdr(skb) - skb->data)
1645 + ntohs(ip_hdr(skb)->tot_len));
1647 if (real_len < skb->len) {
1648 err = pskb_trim(skb, real_len);
1653 hdr_len = skb_tcp_all_headers(skb);
1654 if (unlikely(skb->len == hdr_len)) {
1655 /* only xsum need */
1656 netdev_warn(adapter->netdev,
1657 "IPV4 tso with zero data??\n");
1660 ip_hdr(skb)->check = 0;
1661 ip_hdr(skb)->tot_len = 0;
1662 tcp_hdr(skb)->check = ~csum_tcpudp_magic(
1666 tpd->word3 |= (ip_hdr(skb)->ihl &
1667 TDP_V4_IPHL_MASK) <<
1669 tpd->word3 |= ((tcp_hdrlen(skb) >> 2) &
1670 TPD_TCPHDRLEN_MASK) <<
1671 TPD_TCPHDRLEN_SHIFT;
1672 tpd->word3 |= ((skb_shinfo(skb)->gso_size) &
1673 TPD_MSS_MASK) << TPD_MSS_SHIFT;
1674 tpd->word3 |= 1 << TPD_SEGMENT_EN_SHIFT;
1681 if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
1684 cso = skb_checksum_start_offset(skb);
1685 if (unlikely(cso & 0x1)) {
1686 netdev_err(adapter->netdev,
1687 "payload offset should not ant event number\n");
1690 css = cso + skb->csum_offset;
1691 tpd->word3 |= (cso & TPD_PLOADOFFSET_MASK) <<
1692 TPD_PLOADOFFSET_SHIFT;
1693 tpd->word3 |= (css & TPD_CCSUMOFFSET_MASK) <<
1694 TPD_CCSUMOFFSET_SHIFT;
1695 tpd->word3 |= 1 << TPD_CC_SEGMENT_EN_SHIFT;
1702 static int atl1e_tx_map(struct atl1e_adapter *adapter,
1703 struct sk_buff *skb, struct atl1e_tpd_desc *tpd)
1705 struct atl1e_tpd_desc *use_tpd = NULL;
1706 struct atl1e_tx_buffer *tx_buffer = NULL;
1707 u16 buf_len = skb_headlen(skb);
1714 int ring_start = adapter->tx_ring.next_to_use;
1717 nr_frags = skb_shinfo(skb)->nr_frags;
1718 segment = (tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK;
1721 hdr_len = skb_tcp_all_headers(skb);
1725 tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
1726 tx_buffer->length = map_len;
1727 tx_buffer->dma = dma_map_single(&adapter->pdev->dev,
1730 if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma))
1733 ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE);
1734 mapped_len += map_len;
1735 use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
1736 use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
1737 ((cpu_to_le32(tx_buffer->length) &
1738 TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
1741 while (mapped_len < buf_len) {
1742 /* mapped_len == 0, means we should use the first tpd,
1743 which is given by caller */
1744 if (mapped_len == 0) {
1747 use_tpd = atl1e_get_tpd(adapter);
1748 memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc));
1750 tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
1751 tx_buffer->skb = NULL;
1753 tx_buffer->length = map_len =
1754 ((buf_len - mapped_len) >= MAX_TX_BUF_LEN) ?
1755 MAX_TX_BUF_LEN : (buf_len - mapped_len);
1757 dma_map_single(&adapter->pdev->dev,
1758 skb->data + mapped_len, map_len,
1761 if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) {
1762 /* We need to unwind the mappings we've done */
1763 ring_end = adapter->tx_ring.next_to_use;
1764 adapter->tx_ring.next_to_use = ring_start;
1765 while (adapter->tx_ring.next_to_use != ring_end) {
1766 tpd = atl1e_get_tpd(adapter);
1767 tx_buffer = atl1e_get_tx_buffer(adapter, tpd);
1768 dma_unmap_single(&adapter->pdev->dev,
1773 /* Reset the tx rings next pointer */
1774 adapter->tx_ring.next_to_use = ring_start;
1778 ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE);
1779 mapped_len += map_len;
1780 use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
1781 use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
1782 ((cpu_to_le32(tx_buffer->length) &
1783 TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
1786 for (f = 0; f < nr_frags; f++) {
1787 const skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
1791 buf_len = skb_frag_size(frag);
1793 seg_num = (buf_len + MAX_TX_BUF_LEN - 1) / MAX_TX_BUF_LEN;
1794 for (i = 0; i < seg_num; i++) {
1795 use_tpd = atl1e_get_tpd(adapter);
1796 memcpy(use_tpd, tpd, sizeof(struct atl1e_tpd_desc));
1798 tx_buffer = atl1e_get_tx_buffer(adapter, use_tpd);
1799 BUG_ON(tx_buffer->skb);
1801 tx_buffer->skb = NULL;
1803 (buf_len > MAX_TX_BUF_LEN) ?
1804 MAX_TX_BUF_LEN : buf_len;
1805 buf_len -= tx_buffer->length;
1807 tx_buffer->dma = skb_frag_dma_map(&adapter->pdev->dev,
1809 (i * MAX_TX_BUF_LEN),
1813 if (dma_mapping_error(&adapter->pdev->dev, tx_buffer->dma)) {
1814 /* We need to unwind the mappings we've done */
1815 ring_end = adapter->tx_ring.next_to_use;
1816 adapter->tx_ring.next_to_use = ring_start;
1817 while (adapter->tx_ring.next_to_use != ring_end) {
1818 tpd = atl1e_get_tpd(adapter);
1819 tx_buffer = atl1e_get_tx_buffer(adapter, tpd);
1820 dma_unmap_page(&adapter->pdev->dev, tx_buffer->dma,
1821 tx_buffer->length, DMA_TO_DEVICE);
1824 /* Reset the ring next to use pointer */
1825 adapter->tx_ring.next_to_use = ring_start;
1829 ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE);
1830 use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma);
1831 use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) |
1832 ((cpu_to_le32(tx_buffer->length) &
1833 TPD_BUFLEN_MASK) << TPD_BUFLEN_SHIFT);
1837 if ((tpd->word3 >> TPD_SEGMENT_EN_SHIFT) & TPD_SEGMENT_EN_MASK)
1838 /* note this one is a tcp header */
1839 tpd->word3 |= 1 << TPD_HDRFLAG_SHIFT;
1842 use_tpd->word3 |= 1 << TPD_EOP_SHIFT;
1843 /* The last buffer info contain the skb address,
1844 so it will be free after unmap */
1845 tx_buffer->skb = skb;
1849 static void atl1e_tx_queue(struct atl1e_adapter *adapter, u16 count,
1850 struct atl1e_tpd_desc *tpd)
1852 struct atl1e_tx_ring *tx_ring = &adapter->tx_ring;
1853 /* Force memory writes to complete before letting h/w
1854 * know there are new descriptors to fetch. (Only
1855 * applicable for weak-ordered memory model archs,
1856 * such as IA-64). */
1858 AT_WRITE_REG(&adapter->hw, REG_MB_TPD_PROD_IDX, tx_ring->next_to_use);
1861 static netdev_tx_t atl1e_xmit_frame(struct sk_buff *skb,
1862 struct net_device *netdev)
1864 struct atl1e_adapter *adapter = netdev_priv(netdev);
1866 struct atl1e_tpd_desc *tpd;
1868 if (test_bit(__AT_DOWN, &adapter->flags)) {
1869 dev_kfree_skb_any(skb);
1870 return NETDEV_TX_OK;
1873 if (unlikely(skb->len <= 0)) {
1874 dev_kfree_skb_any(skb);
1875 return NETDEV_TX_OK;
1877 tpd_req = atl1e_cal_tdp_req(skb);
1879 if (atl1e_tpd_avail(adapter) < tpd_req) {
1880 /* no enough descriptor, just stop queue */
1881 netif_stop_queue(netdev);
1882 return NETDEV_TX_BUSY;
1885 tpd = atl1e_get_tpd(adapter);
1887 if (skb_vlan_tag_present(skb)) {
1888 u16 vlan_tag = skb_vlan_tag_get(skb);
1891 tpd->word3 |= 1 << TPD_INS_VL_TAG_SHIFT;
1892 AT_VLAN_TAG_TO_TPD_TAG(vlan_tag, atl1e_vlan_tag);
1893 tpd->word2 |= (atl1e_vlan_tag & TPD_VLANTAG_MASK) <<
1897 if (skb->protocol == htons(ETH_P_8021Q))
1898 tpd->word3 |= 1 << TPD_VL_TAGGED_SHIFT;
1900 if (skb_network_offset(skb) != ETH_HLEN)
1901 tpd->word3 |= 1 << TPD_ETHTYPE_SHIFT; /* 802.3 frame */
1903 /* do TSO and check sum */
1904 if (atl1e_tso_csum(adapter, skb, tpd) != 0) {
1905 dev_kfree_skb_any(skb);
1906 return NETDEV_TX_OK;
1909 if (atl1e_tx_map(adapter, skb, tpd)) {
1910 dev_kfree_skb_any(skb);
1914 atl1e_tx_queue(adapter, tpd_req, tpd);
1916 return NETDEV_TX_OK;
1919 static void atl1e_free_irq(struct atl1e_adapter *adapter)
1921 struct net_device *netdev = adapter->netdev;
1923 free_irq(adapter->pdev->irq, netdev);
1926 static int atl1e_request_irq(struct atl1e_adapter *adapter)
1928 struct pci_dev *pdev = adapter->pdev;
1929 struct net_device *netdev = adapter->netdev;
1932 err = request_irq(pdev->irq, atl1e_intr, IRQF_SHARED, netdev->name,
1935 netdev_dbg(adapter->netdev,
1936 "Unable to allocate interrupt Error: %d\n", err);
1939 netdev_dbg(netdev, "atl1e_request_irq OK\n");
1943 int atl1e_up(struct atl1e_adapter *adapter)
1945 struct net_device *netdev = adapter->netdev;
1949 /* hardware has been reset, we need to reload some things */
1950 err = atl1e_init_hw(&adapter->hw);
1955 atl1e_init_ring_ptrs(adapter);
1956 atl1e_set_multi(netdev);
1957 atl1e_restore_vlan(adapter);
1959 if (atl1e_configure(adapter)) {
1964 clear_bit(__AT_DOWN, &adapter->flags);
1965 napi_enable(&adapter->napi);
1966 atl1e_irq_enable(adapter);
1967 val = AT_READ_REG(&adapter->hw, REG_MASTER_CTRL);
1968 AT_WRITE_REG(&adapter->hw, REG_MASTER_CTRL,
1969 val | MASTER_CTRL_MANUAL_INT);
1975 void atl1e_down(struct atl1e_adapter *adapter)
1977 struct net_device *netdev = adapter->netdev;
1979 /* signal that we're down so the interrupt handler does not
1980 * reschedule our watchdog timer */
1981 set_bit(__AT_DOWN, &adapter->flags);
1983 netif_stop_queue(netdev);
1985 /* reset MAC to disable all RX/TX */
1986 atl1e_reset_hw(&adapter->hw);
1989 napi_disable(&adapter->napi);
1990 atl1e_del_timer(adapter);
1991 atl1e_irq_disable(adapter);
1993 netif_carrier_off(netdev);
1994 adapter->link_speed = SPEED_0;
1995 adapter->link_duplex = -1;
1996 atl1e_clean_tx_ring(adapter);
1997 atl1e_clean_rx_ring(adapter);
2001 * atl1e_open - Called when a network interface is made active
2002 * @netdev: network interface device structure
2004 * Returns 0 on success, negative value on failure
2006 * The open entry point is called when a network interface is made
2007 * active by the system (IFF_UP). At this point all resources needed
2008 * for transmit and receive operations are allocated, the interrupt
2009 * handler is registered with the OS, the watchdog timer is started,
2010 * and the stack is notified that the interface is ready.
2012 static int atl1e_open(struct net_device *netdev)
2014 struct atl1e_adapter *adapter = netdev_priv(netdev);
2017 /* disallow open during test */
2018 if (test_bit(__AT_TESTING, &adapter->flags))
2021 /* allocate rx/tx dma buffer & descriptors */
2022 atl1e_init_ring_resources(adapter);
2023 err = atl1e_setup_ring_resources(adapter);
2027 err = atl1e_request_irq(adapter);
2031 err = atl1e_up(adapter);
2038 atl1e_free_irq(adapter);
2040 atl1e_free_ring_resources(adapter);
2041 atl1e_reset_hw(&adapter->hw);
2047 * atl1e_close - Disables a network interface
2048 * @netdev: network interface device structure
2050 * Returns 0, this is not allowed to fail
2052 * The close entry point is called when an interface is de-activated
2053 * by the OS. The hardware is still under the drivers control, but
2054 * needs to be disabled. A global MAC reset is issued to stop the
2055 * hardware, and all transmit and receive resources are freed.
2057 static int atl1e_close(struct net_device *netdev)
2059 struct atl1e_adapter *adapter = netdev_priv(netdev);
2061 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
2062 atl1e_down(adapter);
2063 atl1e_free_irq(adapter);
2064 atl1e_free_ring_resources(adapter);
2069 static int atl1e_suspend(struct pci_dev *pdev, pm_message_t state)
2071 struct net_device *netdev = pci_get_drvdata(pdev);
2072 struct atl1e_adapter *adapter = netdev_priv(netdev);
2073 struct atl1e_hw *hw = &adapter->hw;
2075 u32 mac_ctrl_data = 0;
2076 u32 wol_ctrl_data = 0;
2077 u16 mii_advertise_data = 0;
2078 u16 mii_bmsr_data = 0;
2079 u16 mii_intr_status_data = 0;
2080 u32 wufc = adapter->wol;
2086 if (netif_running(netdev)) {
2087 WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
2088 atl1e_down(adapter);
2090 netif_device_detach(netdev);
2093 retval = pci_save_state(pdev);
2099 /* get link status */
2100 atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data);
2101 atl1e_read_phy_reg(hw, MII_BMSR, &mii_bmsr_data);
2103 mii_advertise_data = ADVERTISE_10HALF;
2105 if ((atl1e_write_phy_reg(hw, MII_CTRL1000, 0) != 0) ||
2106 (atl1e_write_phy_reg(hw,
2107 MII_ADVERTISE, mii_advertise_data) != 0) ||
2108 (atl1e_phy_commit(hw)) != 0) {
2109 netdev_dbg(adapter->netdev, "set phy register failed\n");
2113 hw->phy_configured = false; /* re-init PHY when resume */
2115 /* turn on magic packet wol */
2116 if (wufc & AT_WUFC_MAG)
2117 wol_ctrl_data |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
2119 if (wufc & AT_WUFC_LNKC) {
2120 /* if orignal link status is link, just wait for retrive link */
2121 if (mii_bmsr_data & BMSR_LSTATUS) {
2122 for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
2124 atl1e_read_phy_reg(hw, MII_BMSR,
2126 if (mii_bmsr_data & BMSR_LSTATUS)
2130 if ((mii_bmsr_data & BMSR_LSTATUS) == 0)
2131 netdev_dbg(adapter->netdev,
2132 "Link may change when suspend\n");
2134 wol_ctrl_data |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
2135 /* only link up can wake up */
2136 if (atl1e_write_phy_reg(hw, MII_INT_CTRL, 0x400) != 0) {
2137 netdev_dbg(adapter->netdev,
2138 "read write phy register failed\n");
2142 /* clear phy interrupt */
2143 atl1e_read_phy_reg(hw, MII_INT_STATUS, &mii_intr_status_data);
2144 /* Config MAC Ctrl register */
2145 mac_ctrl_data = MAC_CTRL_RX_EN;
2146 /* set to 10/100M halt duplex */
2147 mac_ctrl_data |= MAC_CTRL_SPEED_10_100 << MAC_CTRL_SPEED_SHIFT;
2148 mac_ctrl_data |= (((u32)adapter->hw.preamble_len &
2149 MAC_CTRL_PRMLEN_MASK) <<
2150 MAC_CTRL_PRMLEN_SHIFT);
2152 __atl1e_vlan_mode(netdev->features, &mac_ctrl_data);
2154 /* magic packet maybe Broadcast&multicast&Unicast frame */
2155 if (wufc & AT_WUFC_MAG)
2156 mac_ctrl_data |= MAC_CTRL_BC_EN;
2158 netdev_dbg(adapter->netdev, "suspend MAC=0x%x\n",
2161 AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl_data);
2162 AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
2164 ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC);
2165 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2166 AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
2167 pci_enable_wake(pdev, pci_choose_state(pdev, state), 1);
2173 AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
2176 ctrl = AT_READ_REG(hw, REG_PCIE_PHYMISC);
2177 ctrl |= PCIE_PHYMISC_FORCE_RCV_DET;
2178 AT_WRITE_REG(hw, REG_PCIE_PHYMISC, ctrl);
2181 hw->phy_configured = false; /* re-init PHY when resume */
2183 pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);
2187 if (netif_running(netdev))
2188 atl1e_free_irq(adapter);
2190 pci_disable_device(pdev);
2192 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2198 static int atl1e_resume(struct pci_dev *pdev)
2200 struct net_device *netdev = pci_get_drvdata(pdev);
2201 struct atl1e_adapter *adapter = netdev_priv(netdev);
2204 pci_set_power_state(pdev, PCI_D0);
2205 pci_restore_state(pdev);
2207 err = pci_enable_device(pdev);
2209 netdev_err(adapter->netdev,
2210 "Cannot enable PCI device from suspend\n");
2214 pci_set_master(pdev);
2216 AT_READ_REG(&adapter->hw, REG_WOL_CTRL); /* clear WOL status */
2218 pci_enable_wake(pdev, PCI_D3hot, 0);
2219 pci_enable_wake(pdev, PCI_D3cold, 0);
2221 AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
2223 if (netif_running(netdev)) {
2224 err = atl1e_request_irq(adapter);
2229 atl1e_reset_hw(&adapter->hw);
2231 if (netif_running(netdev))
2234 netif_device_attach(netdev);
2240 static void atl1e_shutdown(struct pci_dev *pdev)
2242 atl1e_suspend(pdev, PMSG_SUSPEND);
2245 static const struct net_device_ops atl1e_netdev_ops = {
2246 .ndo_open = atl1e_open,
2247 .ndo_stop = atl1e_close,
2248 .ndo_start_xmit = atl1e_xmit_frame,
2249 .ndo_get_stats = atl1e_get_stats,
2250 .ndo_set_rx_mode = atl1e_set_multi,
2251 .ndo_validate_addr = eth_validate_addr,
2252 .ndo_set_mac_address = atl1e_set_mac_addr,
2253 .ndo_fix_features = atl1e_fix_features,
2254 .ndo_set_features = atl1e_set_features,
2255 .ndo_change_mtu = atl1e_change_mtu,
2256 .ndo_eth_ioctl = atl1e_ioctl,
2257 .ndo_tx_timeout = atl1e_tx_timeout,
2258 #ifdef CONFIG_NET_POLL_CONTROLLER
2259 .ndo_poll_controller = atl1e_netpoll,
2264 static int atl1e_init_netdev(struct net_device *netdev, struct pci_dev *pdev)
2266 SET_NETDEV_DEV(netdev, &pdev->dev);
2267 pci_set_drvdata(pdev, netdev);
2269 netdev->netdev_ops = &atl1e_netdev_ops;
2271 netdev->watchdog_timeo = AT_TX_WATCHDOG;
2272 /* MTU range: 42 - 8170 */
2273 netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN);
2274 netdev->max_mtu = MAX_JUMBO_FRAME_SIZE -
2275 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
2276 atl1e_set_ethtool_ops(netdev);
2278 netdev->hw_features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO |
2279 NETIF_F_HW_VLAN_CTAG_RX;
2280 netdev->features = netdev->hw_features | NETIF_F_HW_VLAN_CTAG_TX;
2281 /* not enabled by default */
2282 netdev->hw_features |= NETIF_F_RXALL | NETIF_F_RXFCS;
2287 * atl1e_probe - Device Initialization Routine
2288 * @pdev: PCI device information struct
2289 * @ent: entry in atl1e_pci_tbl
2291 * Returns 0 on success, negative on failure
2293 * atl1e_probe initializes an adapter identified by a pci_dev structure.
2294 * The OS initialization, configuring of the adapter private structure,
2295 * and a hardware reset occur.
2297 static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2299 struct net_device *netdev;
2300 struct atl1e_adapter *adapter = NULL;
2301 static int cards_found;
2305 err = pci_enable_device(pdev);
2307 return dev_err_probe(&pdev->dev, err, "cannot enable PCI device\n");
2310 * The atl1e chip can DMA to 64-bit addresses, but it uses a single
2311 * shared register for the high 32 bits, so only a single, aligned,
2312 * 4 GB physical address range can be used at a time.
2314 * Supporting 64-bit DMA on this hardware is more trouble than it's
2315 * worth. It is far easier to limit to 32-bit DMA than update
2316 * various kernel subsystems to support the mechanics required by a
2317 * fixed-high-32-bit system.
2319 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2321 dev_err(&pdev->dev, "No usable DMA configuration,aborting\n");
2325 err = pci_request_regions(pdev, atl1e_driver_name);
2327 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
2331 pci_set_master(pdev);
2333 netdev = alloc_etherdev(sizeof(struct atl1e_adapter));
2334 if (netdev == NULL) {
2336 goto err_alloc_etherdev;
2339 err = atl1e_init_netdev(netdev, pdev);
2341 netdev_err(netdev, "init netdevice failed\n");
2342 goto err_init_netdev;
2344 adapter = netdev_priv(netdev);
2345 adapter->bd_number = cards_found;
2346 adapter->netdev = netdev;
2347 adapter->pdev = pdev;
2348 adapter->hw.adapter = adapter;
2349 adapter->hw.hw_addr = pci_iomap(pdev, BAR_0, 0);
2350 if (!adapter->hw.hw_addr) {
2352 netdev_err(netdev, "cannot map device registers\n");
2357 adapter->mii.dev = netdev;
2358 adapter->mii.mdio_read = atl1e_mdio_read;
2359 adapter->mii.mdio_write = atl1e_mdio_write;
2360 adapter->mii.phy_id_mask = 0x1f;
2361 adapter->mii.reg_num_mask = MDIO_REG_ADDR_MASK;
2363 netif_napi_add(netdev, &adapter->napi, atl1e_clean);
2365 timer_setup(&adapter->phy_config_timer, atl1e_phy_config, 0);
2367 /* get user settings */
2368 atl1e_check_options(adapter);
2370 * Mark all PCI regions associated with PCI device
2371 * pdev as being reserved by owner atl1e_driver_name
2372 * Enables bus-mastering on the device and calls
2373 * pcibios_set_master to do the needed arch specific settings
2375 atl1e_setup_pcicmd(pdev);
2376 /* setup the private structure */
2377 err = atl1e_sw_init(adapter);
2379 netdev_err(netdev, "net device private data init failed\n");
2383 /* Init GPHY as early as possible due to power saving issue */
2384 atl1e_phy_init(&adapter->hw);
2385 /* reset the controller to
2386 * put the device in a known good starting state */
2387 err = atl1e_reset_hw(&adapter->hw);
2393 if (atl1e_read_mac_addr(&adapter->hw) != 0) {
2395 netdev_err(netdev, "get mac address failed\n");
2399 eth_hw_addr_set(netdev, adapter->hw.mac_addr);
2400 netdev_dbg(netdev, "mac address : %pM\n", adapter->hw.mac_addr);
2402 INIT_WORK(&adapter->reset_task, atl1e_reset_task);
2403 INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task);
2404 netif_set_tso_max_size(netdev, MAX_TSO_SEG_SIZE);
2405 err = register_netdev(netdev);
2407 netdev_err(netdev, "register netdevice failed\n");
2411 /* assume we have no link for now */
2412 netif_stop_queue(netdev);
2413 netif_carrier_off(netdev);
2423 pci_iounmap(pdev, adapter->hw.hw_addr);
2426 free_netdev(netdev);
2428 pci_release_regions(pdev);
2431 pci_disable_device(pdev);
2436 * atl1e_remove - Device Removal Routine
2437 * @pdev: PCI device information struct
2439 * atl1e_remove is called by the PCI subsystem to alert the driver
2440 * that it should release a PCI device. The could be caused by a
2441 * Hot-Plug event, or because the driver is going to be removed from
2444 static void atl1e_remove(struct pci_dev *pdev)
2446 struct net_device *netdev = pci_get_drvdata(pdev);
2447 struct atl1e_adapter *adapter = netdev_priv(netdev);
2450 * flush_scheduled work may reschedule our watchdog task, so
2451 * explicitly disable watchdog tasks from being rescheduled
2453 set_bit(__AT_DOWN, &adapter->flags);
2455 atl1e_del_timer(adapter);
2456 atl1e_cancel_work(adapter);
2458 unregister_netdev(netdev);
2459 atl1e_free_ring_resources(adapter);
2460 atl1e_force_ps(&adapter->hw);
2461 pci_iounmap(pdev, adapter->hw.hw_addr);
2462 pci_release_regions(pdev);
2463 free_netdev(netdev);
2464 pci_disable_device(pdev);
2468 * atl1e_io_error_detected - called when PCI error is detected
2469 * @pdev: Pointer to PCI device
2470 * @state: The current pci connection state
2472 * This function is called after a PCI bus error affecting
2473 * this device has been detected.
2475 static pci_ers_result_t
2476 atl1e_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2478 struct net_device *netdev = pci_get_drvdata(pdev);
2479 struct atl1e_adapter *adapter = netdev_priv(netdev);
2481 netif_device_detach(netdev);
2483 if (state == pci_channel_io_perm_failure)
2484 return PCI_ERS_RESULT_DISCONNECT;
2486 if (netif_running(netdev))
2487 atl1e_down(adapter);
2489 pci_disable_device(pdev);
2491 /* Request a slot reset. */
2492 return PCI_ERS_RESULT_NEED_RESET;
2496 * atl1e_io_slot_reset - called after the pci bus has been reset.
2497 * @pdev: Pointer to PCI device
2499 * Restart the card from scratch, as if from a cold-boot. Implementation
2500 * resembles the first-half of the e1000_resume routine.
2502 static pci_ers_result_t atl1e_io_slot_reset(struct pci_dev *pdev)
2504 struct net_device *netdev = pci_get_drvdata(pdev);
2505 struct atl1e_adapter *adapter = netdev_priv(netdev);
2507 if (pci_enable_device(pdev)) {
2508 netdev_err(adapter->netdev,
2509 "Cannot re-enable PCI device after reset\n");
2510 return PCI_ERS_RESULT_DISCONNECT;
2512 pci_set_master(pdev);
2514 pci_enable_wake(pdev, PCI_D3hot, 0);
2515 pci_enable_wake(pdev, PCI_D3cold, 0);
2517 atl1e_reset_hw(&adapter->hw);
2519 return PCI_ERS_RESULT_RECOVERED;
2523 * atl1e_io_resume - called when traffic can start flowing again.
2524 * @pdev: Pointer to PCI device
2526 * This callback is called when the error recovery driver tells us that
2527 * its OK to resume normal operation. Implementation resembles the
2528 * second-half of the atl1e_resume routine.
2530 static void atl1e_io_resume(struct pci_dev *pdev)
2532 struct net_device *netdev = pci_get_drvdata(pdev);
2533 struct atl1e_adapter *adapter = netdev_priv(netdev);
2535 if (netif_running(netdev)) {
2536 if (atl1e_up(adapter)) {
2537 netdev_err(adapter->netdev,
2538 "can't bring device back up after reset\n");
2543 netif_device_attach(netdev);
2546 static const struct pci_error_handlers atl1e_err_handler = {
2547 .error_detected = atl1e_io_error_detected,
2548 .slot_reset = atl1e_io_slot_reset,
2549 .resume = atl1e_io_resume,
2552 static struct pci_driver atl1e_driver = {
2553 .name = atl1e_driver_name,
2554 .id_table = atl1e_pci_tbl,
2555 .probe = atl1e_probe,
2556 .remove = atl1e_remove,
2557 /* Power Management Hooks */
2559 .suspend = atl1e_suspend,
2560 .resume = atl1e_resume,
2562 .shutdown = atl1e_shutdown,
2563 .err_handler = &atl1e_err_handler
2566 module_pci_driver(atl1e_driver);